You have a system of equations 

. 
1. Substitude right side of second equation into the left side of the first equation: 

.
2. Solve this equation: 

.
3. Find y:
for 

,
for 

.
4. The solutions of the system are: (3,-12) and (5,-24).
Answer: Correct choice is A.
 
        
        
        
Answer:
A lily costs $7 and a geranium $4.
Step-by-step explanation:
From the question, we can write two equations. let the number of lilies be l and the number of geraniums be g, then:
5
g
+
4
l
=
48
4
g
+
6
l
=
58
Multiply the first equation by 4 and the second by 5, the number of lilies in the other gives:
20
g
+
16
l
=
192
20
g
+
30
l
=
290
Subtract the first equation from the second gives:
14
l
=
98  which dividing by 14 gives  l
=
7
Substituting the value  l
=
7  in the first equation gives:
5
g
+
28
=
48
Subtract 20 from both sides gives:
5
g
=
20  divide by 5 gives  g
=
4
So, a lily costs $7 and a geranium costs $4.
 
        
             
        
        
        
 Answer:
Look below at the image I have provided for you <3
Step-by-step explanation:
I hope this helps!